SAN FRANCISCO (AP) – Brian Rohan, known as San Francisco’s “Dope Lawyer” to 1960s counterculture clients such as the Grateful Dead and Ken Kesey, has died. He was 84 years old. Rohan’s daughter tells the San Francisco Chronicle that her father died Tuesday at his home in the town of Larkspur, Bay Area, after a six year battle with cancer. After defending Kesey for marijuana possession in 1965, Rohan became the lawyer on drug charges. Rohan was a co-founder of the Haight Ashbury Legal Organization. Thanks to his association with the Grateful Dead, Rohan also became a music attorney. He also represented Janis Joplin, Santana and Jefferson Airplane.